The MSAR states the requirements for the widest selection of medical schools. From that, your AMCAS application is evaluated as complete or not. 8 hours of organic most usually equates to two semesters of three credits of organic chemistry and a 2 credit lab. That's pretty much how it goes at the most undergrad schools, and is therefore what the expectation is for the majority of undergraduate experiences.
What Georgetown does and expects doesn't sound like it lines up exactly like that. That said, you need to look at the individual requirements for each school you would apply to and compare it to the MSAR. I'm sure you will find that the MSAR reflects most schools requirements, or more accurately is an all-inclusive composite of most schools.
Not taking O Chem II would be a mistake I think. Your goal should be to be as prepared for the MCAT as possible and that means two semesters of organic and two semesters of biochem. Again, that's to be prepared for the MCAT and the requirements of the widest possible selection of schools you would apply to with the understanding that this is the knowledge base you'll need for the first two years of medical school. Just looking at Georgetown is a sample of 1 and as we all know from taking statistics is that n=1 is not a good data set.